DOI: 10.1016/j.watres.2018.09.050
Scopus记录号: 2-s2.0-85054334589
论文题名: Biological treatment of produced water coupled with recovery of neutral lipids
作者: Sudmalis D. ; Da Silva P. ; Temmink H. ; Bijmans M.M. ; Pereira M.A.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 147 起始页码: 33
结束页码: 42
语种: 英语
英文关键词: Alkane biodegradation
; Biological treatment
; Neutral lipids production
; Produced water
英文摘要: Produced water (PW) is the largest waste stream generated by oil and gas industry. It is commonly treated by physical-chemical processes due to high salt content and poor biodegradability of water insoluble compounds, such as n-alkanes. N-alkanes can represent a major fraction of organic contaminants within PW. In this study the possibility of simultaneous n – alkane biodegradation and production of neutral lipids in a concentrated PW stream with A. borkumenis SK2 as the sole reactor inoculum was investigated. N-alkane removal efficiency up to 99.6%, with influent alkane COD of 7.4 g/L, was achieved in a continuously operated reactor system. Gas chromatography results also showed that the majority of other non-polar compounds present in the PW were biodegraded. Biodegradation of n-alkanes was accompanied by simultaneous production of neutral lipids, mostly wax ester (WE)-alike compounds. We demonstrate, that under nutrient limited conditions and 108.9 ± 3.3 mg/L residual n-alkane concentration the accumulation of extracellular WE-alike compounds can be up to 12 times higher compared to intracellular, reaching 3.08 grams per litre of reactor volume (g/Lreactor) extracellularly and 0.28 g/Lreactor intracellularly. With residual n-alkane concentration of 311.5 ± 34.2 mg/L accumulation of extracellular and intracellular WE-alike compounds can reach up to 6.15 and 0.91 g/Lreactor, respectively. To the best of our knowledge simultaneous PW treatment coupled with production of neutral lipids has never been demonstrated before. © 2018 The Authors Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112355
Appears in Collections: 气候减缓与适应
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作者单位: Sub-department of Environmental Technology, Wageningen University and Research, Bornse Weilanden 9, Wageningen, WG 6708, Netherlands; Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, Leeuwarden, MA 8911, Netherlands; CEB - Centre of Biological Engineering, University of Minho, Campus de Gualtar, Braga, 4710-057, Portugal
Recommended Citation:
Sudmalis D.,Da Silva P.,Temmink H.,et al. Biological treatment of produced water coupled with recovery of neutral lipids[J]. Water Research,2018-01-01,147